Changing out my a/c copressor ?

[Aztec92]

hello all i was wondering would anyone know if i have to ad any new oil to the compressor im going to put in my 92 sc its a used one im just wondering if there is anything i should before i start it back up??????

[minbe]

After you install your a/c components the system should be vacuumed, leak checked and filled with freon and comp oil. A shop should do this unless you have all the equipt. and know how.